Improvement in corn-shellers



A. V. CLELAND.

Corn-Shellers.

No.l5l,474. Patentedluneznam.

A. VINCENT CLELAND, OF NILWS, MICHIGAN.

IMPRCVEMENT IN CORN-SHELLERS.

Specification forming part of Letters Patent No. H5143 Wl, dattd June 2, 1874; application filed February 14, 1874.

To all whom 'it may concern:

Be it known that I, A. ViNoEN'r CLELAND, of Niles, in the county of Berrien and State of Michigan, have invented a new and useful Improvement in Corn-Shellcrs, of which the following is a specification The nature of the invention relates to the construction and arrangement of the drivinggear, which are arranged on parallel shafts, and the shape of the faces of the two gears so constructed that the shafts maybe thrown out of parallel without materially disturbing the mesh of the teeth.

In the accompanying drawing, which forms a part of this speciiication, Figure l repre sents a vertical longitudinal section through the hopper and frame of a corn-sheller en1- bodying my invention. Fig. 2 is a horizontal section through the shelling-wheels and driving-gear of the same.

rlhesameletters refer to corresponding parts.

l" is the frame of the machine, upon which are supported the parallel shafts A and B. The shaft A is driven from the pulley E, and revolves in bearings fixed on the frame. rlhe shaft B is supported at one end in the pivoted bearing G, and at the other end in the inclined slotted bearing ll. Near one end of the shafts A and B are located the bevel-wheels C and D, which engage with each other, and the bevel-faces of which are inclined in opposite directions, so that if the shaft B is thrown out of 'parallel with the shaft A, by moving its loose end in the slotted inclined bearing Il, the teeth of the wheels will not be withdrawn from their full depth of contact with each other, which would be the case if common spur-gears were used. In order that the gears may mesh accurately, the form of their faces and of the ends of the teeth should be determined by describing a circle whose center is the center of the pivoted bearing G of the shaft B, and whose radius reaches the point of contact between the wheels C and D, reference being had to the size of wheel D in determining the distance from the center of bearing G. By making the gears as described, greater width of teeth may be employed on a wheel of given thickness, and greater lateral displacement may be produced without disengaging the teeth. 'lhese beveled wheels are set slightly ont of line with each other, so that when the lateraldisplacement takes place, the larger diameter of the wheel D will be thrown in contact with the teeth of the wheel C, thus compensating for the increase of space between the shafts A and 13, and preserving a nearly perfect contact of the teeth of the two wheels. 011e side of the wheel C is provided with spurs to act in conjunction with the shelling-wheel WI on the shaftl B, to the movable end of which is attached the ily-wheel L.

rEhe ears of corn to be shelled are fed into the hopper 0, and pass between the faces of the wheels O and XV. The shaft I3 yields at one end. to suit the varying` sizes of the ears, and the weight of the ily-wheel tends constantly to return the shaft B to its parallel position.

I am aware that the slotted inclined bearing II and pivoted bearing G are old devices, and I do not claim them independentlyT of the connection shown; but

That I claim, and desire to secure by Letters Patent, is-

'ihe combination of the frame F, shafts A and B, sheller-wheel IV, reversely-beveled wheels C and D, inclined slotted bearing Il, and pivotcd bearing G, substantially as and for the purpose set forth.

A. VINCENT CLELAND.

lVitnesses:

M. F. CLELAND, S. H. WHEELER. 

